Issue with DBConnection.Ownership.Proxy.checkout and GenServer process

[josevalim]

@SZJX

Apparently, whenever every test ends, the channel associated to that test is closed, so the callback always gets triggered for every test case during testing, and this led to the errors. I perform some DB actions in the callback. I’m not sure why the errors occur though.

It occurs for the reason mentioned above: this is triggered when the test finishes and since the test process owns the connection, when the channel gets to run this code there is no connection. You can fix this by explicitly closing the channel on each test.

You have to be really careful with code such as below becausse the handle_info calback is not guaranteed to run, for example in case the node suddenly shuts down for some reason.